Document Detail

Ecotoxicological classification of the Berlin river system using bioassays in respect to the European Water Framework Directive.
MedLine Citation:
PMID:  16957866     Owner:  NLM     Status:  MEDLINE    
Bioassays as well as biochemical responses (biomarkers) in ecosystems due to environmental stress provide us with signals (environmentally signalling) of potential damage in the environment. If these responses are perceived in this early stage in ecosystems, the eventual damage can be prevented. Once ecosystem damage has occurred, the remedial action processes for recovery could be expensive and pose certain logistical problems. Ideally, "early warning signals" in ecosystems using sensing systems of biochemical responses (biomarkers) would not only tell us the initial levels of damage, but these signals will also provide us with answers by the development of control strategies and precautionary measures in respect to the European Water Framework Directive (WFD). Clear technical guidelines or technical specifications on monitoring are necessary to establish and characterise reference conditions for use in an ecological status classification system for surface water bodies. For the Ecotoxicological Risk Assessment (ERA) of endocrine effects we used an approach of the exposure - dose - response concept. Based on the "Ecototoxicological Classification System of Sediments" that uses pT-values to classify effects in different river systems, we transferred the bio-monitoring data to the five-level ecological system of the WFD. To understand the complexity of the structure of populations and processes behind the health of populations, communities and ecosystems an ERA should establish links between natural factors, chemicals, and biological responses so as to assess causality. So, our ecological monitoring assessment has incorporated exposure & effects data.
Gerd Huschek; P-D Hansen
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2006-09-07
Journal Detail:
Title:  Environmental monitoring and assessment     Volume:  121     ISSN:  0167-6369     ISO Abbreviation:  Environ Monit Assess     Publication Date:  2006 Oct 
Date Detail:
Created Date:  2006-10-23     Completed Date:  2007-03-26     Revised Date:  2009-05-11    
Medline Journal Info:
Nlm Unique ID:  8508350     Medline TA:  Environ Monit Assess     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  15-31     Citation Subset:  IM    
Department of Ecotoxicology, Technische Universität Berlin, Faculty VI, Franklin Strasse 29 (OE4), D-10587, Berlin, Germany.
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MeSH Terms
Biological Assay
Biosensing Techniques / methods*
Dose-Response Relationship, Drug
Environmental Monitoring / methods,  standards*
Geologic Sediments / chemistry
Receptors, Estrogen / chemistry,  drug effects*
Rivers / chemistry*
Water Pollutants, Chemical / toxicity*
Reg. No./Substance:
0/Receptors, Estrogen; 0/Water Pollutants, Chemical

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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